Normal vaginal flora in relation to vaginitis.

The normal vaginal, or resident, flora is complex and easily includes over a dozen different organisms, many of them potential pathogens. The quantitative nature of the vaginal flora also is a factor in development of symptoms. This complex milieu is further varied by nature's changes over the years from birth to menopause. Artificial changes occurring as the result of contraceptive measures may also disrupt the resident vaginal flora. Each patient may be her own control, and the balance that leads to an asymptomatic state may vary from individual to individual. An understanding of the normal situation may be the best guide to diagnosing abnormal conditions and directing appropriate therapy.